PRIMERJAVA GNOJENJA S SVEŽO HMELJEVINO V PRIMERJAVI Z ZRELIM KOMPOSTOM IZ HMELJEVINE -- LONČNI POSKUS.

The purpose of the experiment was to determine the effect of fresh hop biomass on the emergence and growth of Chinese cabbage (Brassica rapa L. subsp. chinensis (L.) Hanelt) compared to mature hop biomass compost. The experiment was set up as a pot experiment with three treatments in 7 replications (pots with diameter of 11 cm). Treatments: K (control): 185 g substrate, SH (fresh hop biomass): 27 g fresh hop biomass + 148 g substrate and ZK (mature compost): 27 g mature compost + 148 g substrate. After 47 days, there were significantly fewer plants emerged in SH compared to ZK and K, but later there were no significant differences between the treatments in the number of emerged plants. The above ground biomass of the plants after 47 days, when we evaluated the experiment, was statistically significantly the highest in ZK, which leaves were the most intensely green at the same time. There was no significant difference in biomass weight between K and SH, but the leaves of K were of paler green colour. The content of nitrate in the leaves was significantly higher in ZK (130 mg/L) compared to K and SH (19 mg/L and 36 mg/L). The content of nitrate in the substrate was significantly higher in SH (3.8 mg/L) compared to ZK and K (<3 mg/L). The content of ammonium nitrogen was significantly lower in K (0.3 mg/L) compared to SH and ZK (0.7 mg/L). The density and branching of the root system was the highest in ZK and the worst in SH. [ABSTRACT FROM AUTHOR]